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Old 07-11-2020, 11:54 AM   #1
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Lift system not working on battery

Hey guys,

The pop-up we recently got (2017 1910ESP) has a 12V power lift system but it seems to only work when plugged in to shore power and not off the battery.

I've confirmed that there is a connection from the battery to the winch.

Noticed at the battery connection theres this ShortStop device between the battery and winch as well. (Picture attached)

Just wondering if any thoughts on this. Is the battery short or is it this ShortStop device that's causing it to not work on battery?

I'm leaning towards battery is shot.

Thanks guys
-Eric
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Old 07-11-2020, 12:03 PM   #2
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That looks off, like it got hot, Do you have a meter ? So you can get a voltage reading on the battery and see if there is voltage out of that short stop.
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Old 07-11-2020, 12:09 PM   #3
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Originally Posted by Chris Pastuzyn View Post
That looks off, like it got hot, Do you have a meter ? So you can get a voltage reading on the battery and see if there is voltage out of that short stop.
Thanks for the quick reply, I do have a voltmeter but last time I check the battery it seemed within an accepted range but had shore power hooked up for a while and was disconnected before checking. So was likely charged and not a good read on if its holding charge.

Never thought to check voltage coming from ShortStop that's a great idea.

Battery hasn't been plugged in for weeks now so will check reading on battery and out of ShortStop and post back.

Thanks again!
-Eric
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Old 07-11-2020, 01:41 PM   #4
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Sooo looks like it's the battery is shot it was reading 2.5V so yeah guess that's my first problem lol. Gotta love that the dealership sends you off with a crap battery.

Thanks again for the help. Once I get a new battery and test I'll let you know.

-Eric
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Old 07-11-2020, 02:40 PM   #5
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Depending on how well the previous owner took care of the battery they can go bad pretty quickly. You don't know if they boondocked and let the battery get below 50% capacity which is around 12.1 volts.
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Old 07-11-2020, 02:45 PM   #6
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Originally Posted by eric_hoog View Post

Battery hasn't been plugged in for weeks now

Thanks again!
-Eric
If you do not have a battery disconnect switch or disconnect one side of the battery and leave the PUP not connected to shore power for a few weeks, it will drain the battery. The CO/Propane detector and possible the radio are all drawing enough parasitic current to drain the battery especially if it is older.
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Old 07-11-2020, 02:58 PM   #7
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Thanks guys both of those are great pieces of info for a newbie here.


I'm assuming the battery was already in bad shape since when we were picking up the trailer and got the "demo" the guy mentioned the lift didnt work off the battery.


Will definitely look into disconnecting the battery when not in use as well to save the new battery I get as well.
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Old 07-11-2020, 03:25 PM   #8
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You can also add a disconnect switch. Something such as this. https://www.amazon.com/Ampper-Batter...omotive&sr=1-3
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Old 07-11-2020, 05:29 PM   #9
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Originally Posted by eric_hoog View Post
Thanks guys both of those are great pieces of info for a newbie here.


I'm assuming the battery was already in bad shape since when we were picking up the trailer and got the "demo" the guy mentioned the lift didnt work off the battery.


Will definitely look into disconnecting the battery when not in use as well to save the new battery I get as well.
If you can find a true deep cycle get one. You might need to go to a battery dealer. Something like a DC12. Or if you're feeling spunky you can go with series 6v golf cart (Costco has them).

On the pup I had when I first saw that tiny bus bar and Short Stop installed I couldn't type what I said to myself here. My Jayco TT actually has them mounted with the brackets.
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Old 07-11-2020, 08:30 PM   #10
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You might want to read "The 12 Volt Side of Life" in the forums Library section. Here is a post from wmtire with several links that are useful for people new to rv's.
https://www.forestriverforums.com/fo...ts-157524.html
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Old 07-12-2020, 12:52 PM   #11
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Thanks guys will look into that. Just read through the 12 V side of life article which had some really good information in it as well.

Will look into getting a good deep cycle battery that fits my mount for now and probably just manually disconnect the battery for now when not in use but the disconnect switch is something I'd think I would want to add eventually too and maybe even a voltage monitor but again will stick with the multimeter for now and get a grasp on the basics of it all.

Thanks all! This forum is awesome!
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Old 07-12-2020, 01:29 PM   #12
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mini tip...get a wing nut for your new battery negative terminal to make it easy to remove the negative wire when not in use. ONLY measure battery voltage AFTER 24 hours of disconnection from use or a charger. Voltage readings for state of charge are based on a STATIC battery which cannot be achieved in use.
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Old 07-12-2020, 02:30 PM   #13
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Battery

Need to check specific gravity not voltage
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